Afternoon ladies and gents, iv been working on my wordpress site recently and iv ran into an issue with my navbar, the rollovers have stopped working somewhere along the way from uploading it to now. the coding isnt actually mine, its from Psd2cssonline, iv been through the original code and compared it to what iv got now and I cant see anythin different with the rollovers

<!-- Some META tags to help with Search Engine Optimization. Please
note however that META tags are NOT a magic bullet to get your web page
to the top of search engine rankings. They are just part of that effort. You
can get more information by googling SEO or visiting the psd2css Online forums. -->
<meta name="description" content="Put the description of this page here" />
<meta name="keywords" content="Put keywords for this page here separated by commas" />
<meta name="generator" content="psd2css Online - Dynamic Web Pages from your Photoshop Design in seconds" />

<!-- We use the jquery javascript library for DOM manipulation and
some javascript tricks. We serve the script from Google because it's
faster than most ISPs. Get more information and documentation
at http://jquery.com -->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>

<!-- This is the p2cedit Text Stylizer dialog and tools. It will not exist
in the code for your final page. -->
<div id="p2c-edit" style="display: none;"></div>
<script>$('#p2c-edit').load('/app/p2cedit/p2cedit.html');</script>

</body>
</html>

and here is the javascript

Code:

//
// psd2css.js
//
// This is where all the javascript required by your design is written.
//
// Originally generated at http://psd2cssonline.com
// December 3, 2012, 7:44 pm with psd2css Online version 1.95

// This is required for the PNG fix to work.
if (window.DD_belatedPNG)
DD_belatedPNG.fix('.pngimg');

// This is some javascript to stop IE from displaying the img alt attributes
// when you mouse over imagess. If you would like IE to display the alt attributes,
// just comment out the following 4 lines. Don't worry, if you leave this in
// place, your ALT attributes are still readable by the search engines.
var tmpalt;
$("img").hover(
function(){ tmpalt = $(this).attr( "alt" ); $(this).attr( "alt", "" ); },
function(){ $(this).attr( "alt", tmpalt ); });